Maequis de l



' (No Model.)

DE L. SWANK & J-. 'T. THORNLEY.

Gage 000k.

Patented June 21,1881;

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UNITED STATES PATENT OFFICE.

MARQUIS DE L. SIVANK AND JASPER T. THORNLEY, OF ANDERSON, INDIANA,ASSIGNORS OF ONE-THIRD TO JOHN A. AWALT, OF SAME PLACE.

GAGE-COCK.

SPECIFICATION formingpart of Letters Patent No. 243,324, dated June 211881. Application filed January 31, 1881. (No model.)

To all whom it may concern Be it known that we,MARoU1s DE L. SWANK andJASPER T. THORNLEY, of Anderson, in-

the county of Madison and State of Indiana, have invented a new anduseful Improvement in Gage or Try Cocks, which improvement is fully setforth in the followingspeeification and accompanying drawings, in whichFigure 1 is a side perspective view of the gage-cock, and Fig. 2 is avertical sectional view of the same.

The object of our invention is to provide a simple and effective gage ortry cock for boilers, as will be hereinafter more fully set forth.

In the accompanying drawings, Arepresents the stem or tube, providedwith a screw-thread to enable it to be attached to a boiler. The stemhas a T-shaped vertical extension, B, with a perforation, D,communicating with the perforation of the stem A. The upper andlowerends of the T-shaped extension are pro vided externally withscrew-threads B, to receive the nuts 0 O. A stem, H, passes "erticallythrough the part B and through the nuts 0, and packing material E isplaced around the stem at each end of the T-head, to form a packing forthe stem. The upper end of the stem is provided with a head, I, and thelower end has a bore, J, and at the upper end of the bore a perforation,K, communicating with the bore J. A lever, L, pivoted to the outside ofthe stem is hinged to an arm, the upper end of which is attached to thehead I of the stem, so that the stem may be moved up or down, asdesired, by means of thelever.

The operation of the gage is simple and easily understood. The stementers the chambers A and D. As shown in Fig. 2, the perforation K isbelow the chamber, and will not, therefore, permit the steam to escapethrough the bore J of the stem. When, however, the stem is raised, asshown in Fig. l by the dotted lines 00, the perforation passes withinthe chamber D, and the steam is permitted to pass out unobstructedly.

We are aware of the Patent No. 174,344, of March 7, 1876, which'covers awater-cock operated upon a similar principle and foradifferent purpose.Our device being for steam, it is only necessary that a small apertureshould connect with the outlet J, and by placing the end of theoperating-lever by loose connection upon a line with the longitudinalcenter of the part A we avoid the necessity of a second lever, and theforce is applied to the piston in a nearly direct vertical line.

The construction shown in the patent cited is not sought to be coveredin this application.

Having described our invention, what we claim as new, and desire tosecure by Letters Patent, is

In a steam-gage cock, the combination of the hollow frame A B, nuts 0,packing E, and perforated piston H K J, as shown, combined with thesingle lever L, pivoted upon a central line with the part A, andconnected to the piston-head by the link M, all constructed and arrangedas and for the purposes set fort-h.

In testimony that we claim the foregoing we have hereunto set our handsthis 28th day of 79 January, A. D. 1881.

MARQUIS DE L. SWANK. JASPER 'l. THOBNLEY.

Witnesses:

JOHN W. LOVETT, M L'roN S. ROBINSON.

